<!DOCTYPE HTML>
<html>
<head>
<style type="text/css">

	.common {
		font: "微软雅黑";
		font-size: 30px;
	}
	
	.part{
		color: red;
	}

</style>
</head>

<body>
<h1>This is a heading.</h1>
<p class="common part">This is paragraph.</p>
<p class="common part">This is paragraph.</p>
<p class="common">This is paragraph.</p>
<p class="common">This is paragraph.</p>
<p class="common">This is paragraph.</p>




</body>
</html>
